Isaac van hagen



I. VAN HAGEN.

STOVE BOARD COVER.

No. 271,163. Patented Jan.23,18 83.

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N. PETERS. Photu-Lilhagmplmr. Wasiunglon, n. c.

UNITED STATES PATENT Orrrcn.

ISAAC VAN HAGEN, OF CHICAGO, ILLINOIS, ASSIGNOR TO THE ADAMS &

WESTLAKE MANUFACTURING COMPANY, OF SAME PLACE.

STOVE-BOARD COVER.

SPECIFICATION forming part of Letters Patent No. 271,163, dated January 23, 1883. Application filed December 9, 1881. (No model.)

To all whom it may concern.-

Be it known that I, ISAAC VAN HAGEN, a citizen of the United States, residing in the city of Chicago, in the county of Cook, in the State of Illinois, have invented a certain new and useful Improvement in Stove- Board Govers, which is fully set forth in the following specification, reference being had to the accompanying drawings, in which- Figure l is an outside plan View of my improved stove-board cover. Fig.2 is a section of the board and cover on the line :0 w in Fig. 1. Fig. 3 is a partial section on the same line, enlarged,so as to show the corrugation of the r edge of the cover.

The same letters denote the same parts in all the figures.

My invention relates to covers for stoveboards; and it consists insuch a cover exactly inclosing the edge of the board, and consisting of a single piece of crystallized tin, the object being to provide a handsomer, better-fitting, and more durable cover for such boards than has hitherto been attainable. The surface of 2 5 crystallized tin is much harder than that of zinc, so thatit forms a more durable material for covers, and its appearance is much more pleasing. It has, however, been found impracticable hitherto to produce a stove-board 0 cover of crystallized tin, except by making it in sections. In addition to other difficulties, 2. plate of crystallized tin cannot be shaped so as to inclose the board by any means hitherto in use without being cut or broken. Theprocess of spinning by which zinc covers are applied to circular stove boards will not serve for crystallized tin on account of its hardness and stiffness.

I have succeeded in producing a disk-shaped cover of crystallized tin in a single and whole piece of any size that may be needed, and havingits margin all around turned into a flange, as shown at b in the drawings, at any desired angle to the flat surface a, and having the 5 outer part of this margin also bentinward and parallel to the flat surface, as shown at c in Figs. 2 and 3, so as not only to cover the face, but also exactly inclose the edge of the board. I am aware that heretofore stove-boards have been constructed with azinc coverin one 5o piece spun overthe base. My boa-rd described above cannot be produced in the mode and by the mechanism employed in, the construction of these zinc boards. It is impossible to spin crystallized tin over a Wood base. -A hard metallic rest must be provided, over'which the edge of the tin is turned, or the work cannot be done.

I'am also aware of Rendtorffs Letters Patent No. 233,165, dated October 12,1880 in which a board cover of crystallized tin appears with the edge turned over to embrace the edge of the base. The cover, however, is made in sections, and the edges of the sections are turned over before putting them on the board,

and the sections are then slipped over the base into proper position. The mode and mechanism employed for turnin gover the edges ot'these sections cannotbe applied practically to turning over the edge of an entire cover, and. if acove'r could be formed in this way, it would be impossible to apply it to the base, as the inwardly-projecting flange would prevent the insertion of the base. My board cannot be produced, therefore, in either of the ways mention ed above, and Iwill here state that Ifound it necessary to invent special machinery for the purpose before I was able to produce the board described above. Two patents have already been granted to me for my improved 8o machinery for this purpose, one dated February 7, 1882, No. 253,326, and the other dated May 2, 1882, No. 257,255. In these patents I have set forth what I deem the best method of bringing a single plate of crystallized tin into the desired shape, and also of applying the plate thus shaped to the board]. Therefore I need not here repeat the description of the means by which my improved. cover is produced.

It is obvious that a cover formed from a single plate without division protects the board more perfectly and is simpler in construction than one which is formed by joining a number of pieces.

\Vhat I claim as my invention, and desire to secure by Letters Patent, is-

1. In a stove-board, a'top or surface composed of a single piece of crystallized tin havtallized tin-plate having its edge turned over iugits edge turned over to form a flange or to entirely inclose the edge of the base, subbead along the periphery of the disk, substanstantially as described. tially as and for the purpose described. I ISAAC VAN HAGEN.

5 2. As a new article of manufacture, a stove- Witnesses:

board consisting of a base of suitable material J NO. 0. MACGREGOR, and a top composed of a single sheet of crys- M. B. GAGE. 

